Siemens 6AV6355-1CA47-7CJ2 OP 177B

€ 2.136,36

SKU: 6AV6355-1CA47-7CJ2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CJ2 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a monochrome or color display with touch and key-based operation, serving as a compact yet capable panel for process visualization and control. It is part of Siemens' established SIMATIC HMI portfolio, offering reliable operator interface functionality in industrial environments.

The OP 177B features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet communication interfaces, enabling flexible integration into existing Siemens automation networks. It is configurable using WinCC flexible engineering software and supports recipe management, alarm logging, and trend displays. The panel operates on 24 V DC and is rated to IP65 on the front face, providing protection against dust and water ingress in demanding environments.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and packaging industries where compact operator panels are required at the machine level. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it a versatile choice for both new installations and retrofits. The combination of key-based and optional touch operation suits applications where reliable tactile input is preferred over touch-only interfaces.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Display Resolution	320 x 240 pixels (QVGA)
Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI/PROFIBUS DP, Ethernet (RJ45)
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90%, non-condensing
Mounting	Panel mounting
Certifications	CE, UL, cULus
Configuration Software	WinCC flexible 2005 or higher
Series	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during startup; the loaded project is incompatible with the panel firmware version.
Re-transfer the project using a compatible version of WinCC flexible. Ensure firmware and project version match.
Event ID: 20000: Communication error on MPI/PROFIBUS DP interface; connection to the PLC has been lost.
Check MPI/PROFIBUS cable connections, verify bus termination resistors are correctly placed, and confirm PLC address settings in the project.
Event ID: 40000: Ethernet communication failure; the panel cannot establish a connection to the configured network node.
Verify Ethernet cable integrity, confirm IP address configuration on both the panel and the target controller, and check network switch or hub status.
Event ID: 70000: Recipe data error; a recipe record could not be read from or written to internal memory.
Check available memory on the panel. Re-transfer the project and verify recipe configuration in WinCC flexible.
Event ID: 50000: Alarm buffer overflow; the number of pending alarms has exceeded the buffer capacity.
Acknowledge and clear existing alarms. Review alarm configuration in WinCC flexible to reduce simultaneous alarm load.
Event ID: 30000: System memory low warning; available runtime memory is critically low.
Reduce the number of active screens, variables, or logged data. Consider optimizing the project structure in WinCC flexible.
Event ID: 60000: Internal device error; a hardware fault has been detected within the panel.
Perform a panel restart. If the error persists, the unit may require repair or replacement of internal components.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6355-1CA47-7CJ2)?

The OP 177B is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. Ethernet-based communication with S7 controllers is also supported.

What software is required to configure this panel?

The panel is configured using Siemens WinCC flexible 2005 or a later version. Projects are transferred to the panel via MPI, PROFIBUS DP, Ethernet, or USB.

What is the input voltage for the OP 177B?

The panel operates on 24 V DC. Ensure the power supply is within the specified tolerance range to avoid operational issues.

Does the OP 177B support touch input?

The OP 177B is primarily a key-operated panel. Depending on the specific variant, it may include a touch-sensitive display in addition to the membrane keypad.

What is the front panel protection rating of this unit?

The front face of the OP 177B is rated to IP65, providing protection against dust ingress and low-pressure water jets.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check for blown internal fuses or a faulty power supply unit.

Restore correct 24 V DC supply. Replace any blown fuses. If the internal power supply is faulty, the unit will require professional repair or component replacement.

Panel fails to communicate with the PLC via PROFIBUS DP

Verify the PROFIBUS address configured on the panel matches the project settings. Inspect the cable for damage and confirm bus termination is applied only at both physical ends of the network.

Correct the PROFIBUS address in the panel startup menu. Replace damaged cables and ensure only the two end nodes have termination resistors enabled.

Project transfer fails via Ethernet

Confirm the panel IP address, subnet mask, and gateway are correctly configured. Verify the PC and panel are on the same network segment and that no firewall is blocking the transfer port.

Reconfigure network settings on the panel via the Control Panel in the startup menu. Disable PC firewall temporarily during transfer or add an exception for WinCC flexible.

Touchscreen or keys are unresponsive

Check for physical damage to the keypad membrane or display surface. Attempt a panel restart to rule out a software hang.

Perform a hard reset by cycling power. If keys remain unresponsive after restart, the keypad membrane or internal controller board may require replacement.

Panel repeatedly restarts or crashes during operation

Check for unstable 24 V DC power supply with a multimeter or oscilloscope. Review the project for excessive variable polling rates or memory-intensive screen configurations.

Stabilize the power supply and ensure it meets the panel's current requirements. Optimize the WinCC flexible project to reduce CPU and memory load on the panel.

Condition	Repair, Used, Refurbished, New in box (sealed)